Extrusion press container apparatus



Se t. 16, 1969 R. F. BOSHOLD EX'PRUSION PRESS CONTAINER APPARATUS 2 Sheets-Sheet 1 Filed April 26. 1967 INVENTOR RAYMOND f. BOSHOLD er w ATTORNEYS.

p 1969 R. F. BOSHOLD EXTRUSION PRESS CONTAINER APPARATUS 2 Sheets-Sheet 2 Filed April 26, 1967 INVENTOR mama/v0 z BOSHOLD ATTORNEYS.

United States Patent U.S. Cl. 72-272 Claims ABSTRACT OF THE DISCLOSURE An extrusion container is supported within the holder by keys of which the container rests so that movement of the container holder away from the container w1ll facilitate transferring the container to support bars from which the container may be raised vertically.

This invention relates to an extrusion press container apparatus. More particularly, the invention relates to container apparatus constructed in a manner so as to fac litate the ease with which a container may be removed without unnecessarily extending the length of the extrusion press while at the same time increasing the speed and ease with which the container may be changed. Necessary alignment is obtained in a manner which is simple and reduces risks of cocking which may cause extensive damage.

It is a general object of the present invention to provide a novel extrusion press container apparatus.

It is another object of the present invention to provide an extrusion press container apparatus constructed in a manner so as to facilitate the ease and speed with which containers may be changed.

It is another object of the present invention to provide novel apparatus for removing an extrusion press container in a manner which is simple, requires no adjustments, and assures alignment necessary to prevent damage to the apparatus.

Other objects will appear hereinafter.

For the purpose of illustrating the invention, there is shown in the drawings a form which is presently preferred; it being understood, however, that this invention is not limited to the precise arrangements and instrumentalities shown.

FIGURE 1 is a side elevation view of a portion of an extrusion press, with the container shown in section.

FIGURE 2 is a sectional view taken along the line 22 in FIGURE 1.

FIGURE 3 is an elevation view similar to FIGURE 1, but illustrating the container and its holder during separation of the same.

FIGURE 4 is a sectional view taken along the line 44 in FIGURE 3.

FIGURE 5 is an enlarged sectional detail view of a portion of the container and its holder taken along the line 55 in FIGURE 3.

FIGURE 6 is a sectional view taken along the line 66 in FIGURE 1.

Referring to the drawing in detail, wherein like numerals indicate like elements, there is shown in FIGURE 1 an extrusion press designated generally as 10. The-extrusion press 10 includes a movable cross head 12 sup porting a stem 14. A conventional cylinder, not shown, is connected to the cross head 12.

A container 16 is provided telescoped within a holder 20. The container 16 is cylindrical and is provided with a cylindrical liner 18 fixedly secured thereto. At the end adjacent the stem 14, the container 16 is provided with a peripheral notch 21 which receives a split ring 22. Ring 22 retains the container 16 within its holder 20 and insures Patented Sept. 16., 1969 that the container and container holder are locked together when the container is to be moved away from the die. This is known as the stripping stroke in an extrusion "ice cycle. Ring 22 may be as shown in British Patent 727,208.

The cylinder liner 18 is aligned with an extrusion die 26 supported by a die holder 24 on a stationary platen 28. The container holder 20 is connected to a pair of tie rods 30 and 32 and supported by a base frame not shown. As shown more clearly in FIGURE 4, the tie rods 30 and 32 extend through ears on the holder 20 and are positioned so that one is above the horizontal and the other is below the horizontal, but diametrically opposite one another. The tie rods 30 and 32 are connected to power cylinders so that they may cause the holder 20 to move toward and away from the die 26 while maintaining the liner 18 coaxial with respect to the stem 14 and die 26.

The container 16 is slidably supported by and orientated with respect to its holder 20 by means of keys 34, 36 and 38. Keys 34 and 36 are at diametrically opposite points removed arcuate degrees from the key 38. The key 38 is located at the lowest point of the inner periphery of the container holder 20. As will be apparent from FIG- URE 5, the keys 34 and 36 are shorter in length than the length of the container 16.

As shown more clearly in FIGURES 4 and 6, the container 16 is provided with notches 40 and 42 for receiving the keys 34 and 36 respectively. The container has a shoulder overlying and being supported by the keys 34 and 36. The notches 40 and 42 are constructed in such a manner so that no material of the container 16 is direct ly below the keys 34 and 36. Container 16 is provided with a notch 44 for receiving the key 38 as shown more clearly in FIGURE 4.

A pair of detent pins 46 and 48 are provided on the holder 20 at diametrically opposite points as shown more clearly in FIGURE 2. As shown more clearly in FIGURE 5, the detent pins 46 and 48 are of sufficient length so that they may enter the space between the outer peripheral surface of container 16 and its holder 20. Also, it will be noted that the detent pins 46 and 48 are located along a length of the container 20 which is not coextensive with the keys 34 and 36. Thus, as shown in FIGURE 5, detent pin 46 is between the end face 47 on key 36 and the end face 49 on the holder 20. Detent pin 48 is similarly located for a purpose to be made clear hereinafter.

The platen 28 is provided with guide slots through which extend auxiliary bars or arms 50 and 52. The slots are so positioned so that the arm 50 is accurately aligned with notch 40 and key 34. Likewise, arm 52 is accurately aligned with notch 42 and key 36. The arms 50 and 52 may be interconnected by a brace and simultaneously activated toward and away from the container 16 by means of a power cylinder, not shown. The specific details of the means for moving the arms 50 and 52 are not particularly significant and thus could be manually operated if desired.

The operation of the extrusion press is conventional and hence need not be described in detail. The sequence of steps in conjunction with changing the container is as follows:

When it is desired to change and/or remove the container 16, the first step is to remove the split ring 22. After the ring 22 has been removed, as shown in FIGURE 2, arm 52 is moved so as to engage the end face 47 of key 36. Detent pin 46 is moved to the position shown in FIG- URE 5 so that it enters a hole adjacent the end of arm 52. Ann 50 is similarly connected to the holder 20 by means of pin 48. A cap 54 is removably attached to the end of stem 14. Thereafter, the holder 20, container 16, and the arms 50 and 52 are moved from the position shown in FIGURE 2 to the position shown in FIGURE 3 by the tie rods 30 and 32. Cap 54 has an outer diameter which is greater than the diameter of the liner 18. Hence, during such movement the cap 54 on stationary stem 14 will push the container 16 through the holder 20 as shown more clearly in FIGURE 3.

Since the arm 52 is aligned with key 36 and connected to the holder 20 and since arm 50 is aligned with key 34 and connected to the holder 20, the container 16 will be transferred to and supported by the arms 50 and 52 in the same manner that the container was supported by the keys 34 and 36 when disposed within its holder 20. After the container is supported by the arms 50 and 52 as shown in FIGURE 3, the container 16 can be raised vertically. The configuration of the notches 40 and 42 assures that the raising of the container 16 will not cause interference with the arms 50 and 52.

The upper surface of the arm 52 coincides with the upper surface of the key 36. The upper surface of arm 50 coincides with the upper surface of key 34. Hence, the transfer of the container from the keys to the arms is accomplished smoothly without any need for adjustments. To facilitate lifting the container 16 upwardly, it may be provided with a conventional hook or recess on its outer surface. Replacing the container 16 or substitution of a new container is accomplished by reversal of the above sequence of steps. When reinserting a container into the holder 20, the mating key 38 and keyway 44 assure that the container and holder are coaxial.

The present invention may be embodided in other specific forms without departing from the spirit or essential attributes thereof and, accordingly, reference should be made to the appended claims, rather than to the foregoing specification as indicating the scope of the invention.

I claim:

1. In an extrusion press container apparatus comprising a container holder, a container in said holder and supported by a pair of keys, the keys being fixed to said holder and said container having notches each receiving one of the keys, each key being shorter than the length of the holder so as to define a pair of spaces, a pair of movable arms, and means supporting each arm aligned with one of the keys so that each arm may enter one of said spaces when removal of the container from support by the holder is desired, and said arms being adapted to support the container when it is exteriorly of its holder.

2. An apparatus in accordance with claim 1 including a releasable ring means interconnecting the container and its holder.

3. An apparatus in accordance with claim 1 including a mechanical latching device on said container holder adjacent each of said spaces for releasably interconnecting the holder with one end of each arm.

4. An apparatus in accordance with claim 1 including a die holder, a die supported by said die holder, a stem axially aligned with the die, means supporting the container holder and its container between the die and stem and for movement toward the stem so that the stem may effect a pushing of the container through its holder, said arms being supported by a platen, and said die holder being supported by said platen.

5. Apparatus in accordance with claim 4 including a split ring releasably interconnecting the container with the end of the holder which is remote from the die.

References Cited UNITED STATES PATENTS 3,070,391 12/1962 Hofmann 287-119 2,830,701 4/1958 Kent 72272 X 3,083,827 4/1963 Rosenthal 72272 X 3,352,141 11/1967 Boshold 72272 2,075,803 4/1937 Dinzl et a1 72272 X 2,725,982 11/1955 Albers 72272 1,037,213 9/1912 Derain 72263 H CHARLES W. LANHAM, Primary Examiner A. L. HAVIS, Assistant Examiner US. Cl. X.R. 72263 

